Sargassum Fish (Histrio histrio)

The sargassum fish is a small ambush predator (growing only to 20 cm in length) that gets its common name from the habitat in which it lives – sargassum algae beds that float on the ocean’s surface.  The sargassum fish is generally found in tropical and subtropical areas of the world in offshore waters and comes inshore when winds push the sargassum algae towards land. These fish are camouflaged to look like the sargassum seaweed and have fleshy weed-like protuberances that cover their bodies.  This natural camouflage allows the fish to easily ambush their prey of shrimp and other small fish as well as hide from predators.  They are occasionally found at the Grand Bay NERR during the summer months when southerly winds bring the sargassum algae close to shore.


Recent News

  • Sightings April 2019 – August 2019
    October 30, 2019

    April 2019 4/3- Large white tailed deer (2); Male painted bunting 4/12- Blue-gray gnat catcher 4/16- Glass lizard 4/19- Yellow colicroot 4/24- Rose orchid/pogonia; wild onion/garlic May 2019 5/1- Large bald eagle 5/7- Red-headed woodpecker 5/8- Gulf Coast box turtles (4) 5/16- Large white tailed deer 5/20- Baby box turtle […]

  • We’re looking for volunteers for fall 2019!
    August 23, 2019

    It’s already gearing up to be a busy fall at the Grand Bay NERR. Earlier this summer we celebrated our 20th year as a Reserve with an open house for guests. To continue the celebration, our National Estuaries Day event will have even more fun for the family! In addition to our […]

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